ppl. a. (UN-1 8, 5 b.)
1816. Jane Austen, Emma, I. iv. 63. The uncouthness of a voice wholly unmodulated.
1861. [Mrs. A. J. Penny], Romance Dull Life, xx. 150. He answered with a short and unmodulated monosyllable.
1866. Livingstone, Last Jrnls. (1873), I. xi. 292. A low unmodulated guttural drawl.